Minor complaints so far: Revive and targeting bosses

Is there an in-game explanation of how reviving teammates works? i've had a few wipes because I couldn't tell if I was actively reviving somebody or just standing there with my mouse in my hand while the boss charges up his big strike. I know the sparkles start coming down to the body but they start off slow.

It can also be hard to tell where the boss is in fights where they teleport all over the screen, the small life bars that you can turn on don't seem to work for area bosses that have the big bar at the top of the screen. I spent a lot of time in the Traitors Passage fight shooting at teammates.

Otherwise i'm really enjoying the slower pace (my biggest complaint about POE1 was the pace of groups, as much fun as speedster characters are). I'm really enjoying how well the crossbow and quarterstaff work with classes on the other side of the tree from their passives and am looking forward to the additional classes/weapons to keep mixing things up.